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Pet Doors for Windows

  • Install an adjustable  window pet door panel in just 60 seconds, no damage to your window
  • Available for both sash and sliding windows, fitting any window sturdy aluminum or vinyl frame
  • Opt for manual or electronic flaps, the latter allowing entry only for your pets
Home > Pet Doors for Windows
17 products
  • A close-up of a white Dragon brand double flap pet door insert for aluminum sash windows, slightly tilted open.
    from $279.99
    from $279.99
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    2 colors available

  • Dragon single flap pet door for sash windows, front view, white, with locking cover. Two-piece flap design for improved sealing and insulation.
    from $259.99
    from $259.99
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    2 colors available

  • White Dragon Double Flap Pet Door for Windows from the front, showing the two flaps open.
    from $299.99
    from $299.99
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    2 colors available

  • Dragon small single flap pet door for windows, white, angled view.
    from $279.99
    from $279.99
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    2 colors available

  • from $289.99
    from $289.99
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  • from $359.99
    from $359.99
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  • A white Dragon Vinyl Pet Door for Sash Windows installed in a window with the flap open.
    from $239.99
    from $239.99
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  • from $399.99
    from $399.99
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    3 colors available

  • from $399.99
    from $399.99
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    3 colors available

  • from $249.99
    from $249.99
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    2 colors available

  • from $249.99
    from $249.99
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    2 colors available

  • from $249.99
    from $249.99
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  • from $259.99
    from $259.99
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  • from $169.99
    from $169.99
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  • from $179.99
    from $179.99
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  • from $359.99
    from $359.99
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  • from $249.99
    from $249.99
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Window pet doors are a versatile and non-invasive solution for pet owners who want to offer their pets the freedom to come and go at their will. Window pet doors are easy-to-install doors that fit neatly into both sash windows that slide vertically and sliding windows that move horizontally. This compatibility with different window types makes these pet doors adaptable to a variety of home layouts.

The installation process is designed with homeowners in mind - many of these pet doors can be set up within 60 seconds, and require no tools or alterations to your window. Made from durable materials like sturdy aluminum and vinyl, these doors are crafted to withstand frequent use and fit any window frame, ensuring a seamless fit with your home's aesthetics.

Window pet doors are offered in a range of styles to meet diverse pet and homeowner needs. From manual flaps to electronic flaps, pet owners can choose a door that best matches their pet's habits and their own preferences. Electronic flaps provide an added layer of security, only permitting access to pets wearing a corresponding microchip or collar tag. This feature prevents uninvited animals from gaining entry, keeping your home secure.

Security-conscious homeowners can opt for models that include additional locking mechanisms. These mechanisms can secure the pet door as needed, such as during times when you're away from home.

To combat the elements and ensure your home stays comfortable throughout the year, many models are weather-resistant and offer excellent insulation. Higher-end models also promise energy efficiency, which can lead to substantial savings on heating and cooling expenses over time.

Whether you are a cat or a dog owner, there are window pet doors to match all pet sizes and homeowner requirements. And for any questions or advice on product selection, customer service teams stand ready to assist.

Invest in a window pet door today, and enjoy the peace of mind that comes with providing your pet the freedom they deserve, all without compromising the security or aesthetics of your home.

ALUMINUM VS. VINYL PANELS

How to Determine if Your Window Frame is Vinyl or Aluminum:

  • Tap the frame: An aluminum sliding window will sound metallic while a vinyl one will make a dull, plastic noise.
  • Measure Track Width: Vinyl tracks are often slightly wider than aluminum. Aluminum tracks are generally 1” wide while vinyl tracks are about 1.5” wide.

Aluminum Panels: Aluminum Dragon panels fit aluminum windows with tracks at least 1” thick. They will fit vinyl windows with tracks at least 1” thick too. However, since vinyl doors generally have wider tracks the panel may wobble a bit.

Vinyl Panels: The Dragon Vinyl Panel is designed to fit in vinyl-framed windows with tracks at least 1” thick. The vinyl pet door panel framing will match your existing window for an aesthetic look. Vinyl is also excellent for cold weather, as it resists the “sweating” (condensation buildup) that aluminum can be prone to in cold climates.

How to Measure Track Width 

You’ll need to measure your window track to choose the correct pet door panel height. Make sure to measure the track thickness, which needs to be at least 1” to accommodate the panel.

Measure Track Width for Sash Windows: For sash windows, measure from the deepest point of one side of the track all the way to the deepest point of the other side of the track to find the track width.

Measure track Width for Side-Sliding Windows: To measure your track height, use a tape measure to find the distance from your bottom track to your upper track.

dragon track measurement guides


Locking & Security

All Dragon Pet Door models come with a sturdy thermoplastic Locking Cover to block access to the pet door as needed. The locking cover keeps neighborhood critters out of your home and allows you to lock the flap at night or when you’re away. 

Dragon pet door locking cover

 

Locking Side-Sliding Window Panels: Dragon sideways-sliding window inserts come with a clamp lock that attaches to the flange of the window track at the edge of the sliding window panel. This clamp securely locks the window to prevent access while you’re away. When you want to open your window, simply remove the clamp lock. For additional security, we recommend a wooden dowel or Charley Bar. The Charley Bar can be unlocked in a matter of seconds to open your sliding window.

Locking Sash Window Panels: To permanently lock your Dragon sash, you can install wood screws in the track immediately above the window on both sides. With this method, you would no longer be able to raise the window. For continued use of your window sash, the Charley Bar is the perfect solution. It unlocks in just a few seconds so you can access the sash window. 

how to lock dragon pet doors for windows

How to Measure Your Pet

Measuring your pet is crucial to choosing the right door for your pet’s safety and comfort. To find your dog’s shoulder height measure from the floor to the top of their withers. The step-over height should be as low as possible for comfortable use by your pet, especially as they grow older. You can use the formula below:

Step Over + Flap Height = At least 1" Taller than Your Dog’s Shoulder Height.

flap size guide for dragon pet door

Frequently Asked Questions

Does a window pet door guard against the weather?

Quality cat flaps for windows, such as Thermo Sash pet doors, are weather-resistant and can withstand the elements effectively. A low-cost weather-proof option is the Whiskers & Windows Cat Door for Sash Windows-- and for horizontal-sliding windows, the Whiskers & Windows Cat Door for Horizontal Sliding Windows (also available with custom height ranges).

Why are window pet doors expensive?

Higher-cost pet doors provide better energy efficiency and durability. Better insulated models can save on AC/heating bills and need fewer replacements, justifying the price. Quality of the materials like glass, metal, and the flap also influences the performance and cost.

How often do I need to replace flaps and parts for my dog door window insert?

The frequency of replacements can vary. High-quality pet doors may not need replacements for the pet’s entire life, while cheaper versions may require frequent replacements. Investing in a costlier pet door can be economical in the long run.

What should I consider while buying a doggie door window insert?

Consider accessibility for your pet, insulation quality, the necessity to keep other animals out, window track width (most need at least 1" width), and the window height for door installation.

Can I lock my window with the pet door installed? What kind of lock will the pet door include?

Some sash window pet doors may not include a lock. Permanent locking can be done by installing screws above the window after installing the pet door. If you need occasional window raising, two dowels cut to stand inside window tracks can be used.

Can I switch the side the pet door is on with the Thermo Sash 3e?

Yes, by removing the screws on the top and bottom, flipping the flap assembly upside down, sliding it back in, and tightening the screws again.

Can I flip the side the pet door is on with Ideal pet door models?

No, you need to specify the door's location while ordering. Once the Ideal sash is built, the door's location can't be changed.

Can Thermo Sash be made smaller than the 22" adjustment?

Generally, you can trim the spring-loaded piece for an extra ¾” of compression to reduce it to 21-¼”. For further reduction, consider a custom-made option.

Is it easy to install a pet door for a window?

Yes, the pet door comes with a weatherstrip for easy installation. This item is included with our Thermo Sash 3e.

What are the major types or styles of sash window pet doors?

There are expensive models with dual pane glass and high-quality flaps, like the Thermo-Sash 3e. Economical choices include single pane glass and thinner flaps, like Ideal “Fast Sash” and Ideal “Cat Sash”.

What is a Sash Window?

A sash window or 'double-hung' window comprises two window units that slide in separate tracks.

How is a pet door installed in a sash window?

Installation is simple and often tool-free. The lower window is raised, the pet door is positioned in the track beneath the window, and then the window is closed down on top of the pet door sash.

What happens to the window screen when I install a pet door?

The screen must be removed for the pet to enter and exit freely. The screen, held in a frame, can be popped off for future use. You can also convert your screen into a pet door with the Pet Door Screen Conversion Kit. 

Are there any electronic pet door sashes?

Yes, the Ideal “E” Cat Electronic Cat Door is an electronic option, but it's suitable only for cats, controls one-way traffic, and is not raccoon-proof.

Do I need tools to install the Ideal Sash Windows with dual pane glass?

No, they come with ⅛” thick single pane glass.

Can I lock the Ideal Fast Sash for Windows?

Yes, it comes with a locking cover that slides in from the top of the sash window.

Do I need tools to install the Thermo Sash?

No tools are required for the Thermo Sash installation.

Do Ideal Sash Windows come in multiple colors?

No, they are available only in white.

Do I need to measure my pet or can I just get the biggest door?

While a larger door might seem better, it's best to measure your pet to ensure the door is appropriately sized. A door too large can be challenging for smaller pets to use. Measure your pet from feet to shoulder to get the correct flap height.

What if my track is less than 1 inch wide?

Most pet doors require a track width of at least 1”.

Do I need a certain kind of window to install a sash window pet door?

A sash window pet door fits in double-hung or 'sash' windows. These windows consist of two units that slide vertically in separate tracks.

What can I do if my window's screen interferes with the pet door?

For a pet to access the door, you'll need to remove the screen. Typically, the screen is held in a removable frame.

Do you offer electronic pet doors for windows?

Yes, the Ideal “E” Cat Electronic Cat Door is available. However, it's designed for cats only and controls one-way access.

What colors do Ideal Sash Windows come in?

Ideal Sash Windows are only available in white.

Can I create my own pet door?

Yes, with some woodworking and DIY skills, you can create your own pet door. However, consider that ready-made doors offer advanced features like insulation, weather resistance, and electronic access.

Do window pet doors need to be drilled in?

No, they're tension-mounted for easy installation. If desired, they can be secured further with screws.

How can I prevent other cats from using the pet door?

If you want to limit access, consider an electronic or microchip cat door like the Thermo Sash 2e with Sure Petcare.

How can my pet access the door if there's a significant drop on the other side?

A ramp or a series of secured shelves can provide safe access for your pet.

How is the pet door secured in place?

Pet doors for windows use a spring-loaded/tension adjustment panel for secure installation.

Can I install a pet door in a side-sliding window?

Yes, the Custom Endura Flap Thermo Panel 3e is designed for side-sliding windows.

What can I do if the pet door is too narrow or too wide for my window?

If the door is too narrow, you can add a width extension. If it's too wide, you can trim from the spring-loaded adjustment pieces.

What's the difference between Ideal Cat Sash and Fast Sash?

The Ideal 'Cat Sash' features a rigid flap and 4-way lock, while the 'Fast Sash' has a soft flap with a slide-in locking cover.

What's the best pet door for cold climates?

For cold areas, we recommend the Endura Flap Thermo Sash or the Custom Endura Flap Thermo Panel.

What pet door is suitable for a basement window?

If your window slides vertically, a Sash Window pet door will work. For horizontally sliding windows, consider the Custom Thermo Panel.